10 Best 12000 Btu Mini Split Heat Pump 2026 in the United States

The Senville LETO Series 12000 BTU mini split heat pump offers a strong cooling and heating capacity suitable for rooms around 400 to 600 square feet, making it a good choice for bedrooms, living areas, or small offices. Its SEER rating of 19 (noted as SEER2 20.8 in the description) indicates efficient energy use compared to many older or less advanced models, which helps lower electricity bills. It also supports heating down to about 5°F (-15°C), so it can handle mild to moderately cold winters. One standout feature is its Alexa compatibility, allowing you to control the unit via voice commands or an app, adding convenience and modern smart home integration.

The MRCOOL Easy Pro 12,000 BTU Mini-Split Heat Pump is a solid choice for heating and cooling rooms up to about 550 square feet. Its 12,000 BTU capacity provides reliable temperature control for small to medium spaces. One of its biggest advantages is the easy DIY installation, which can save you money since professional setup isn’t required. The unit operates quietly at around 43 decibels, so it won’t be disruptive in a living room or bedroom. It runs on a 115-volt power supply and uses a newer refrigerant (R-454B), which is more environmentally friendly.

The DELLA Versa Series 12000 BTU Mini Split Air Conditioner stands out for its energy-efficient performance, boasting a high 19 SEER2 rating and 8 HSPF rating, which make it cost-effective both for cooling and heating. It has a commendable BTU rating suitable for spaces up to 550 square feet, making it ideal for medium-sized rooms. This unit's quiet operation, ranging from 30-41 dBa, ensures minimal noise disruption, which is a significant plus for maintaining a peaceful environment at home.